[DeTomaso] ommission - ZF gear oil weight

[Will Kooiman]

I agree.  I use 75W90NS.

>From the redline website about 75W90NS.

* Designed for transmissions and transaxles - helps to slow synchros for
easier shifting across a broad temperature range
* Contains extreme pressure additives like our 75W90 GL-5 oil, but lacks
friction modifiers to balance slipperiness
* Also used with clutch-type LSDs in racing for maximum lock up







On 2/9/15, 11:14 PM, "Pantdino via DeTomaso" <detomaso at poca.com> wrote:

>   I'll go with Leslie Gray's experience.
>   Most GL-5 oils say "approved for use with limited slip diffs" on the
>   bottle, which means they have the "extra slippery additives."  I guess
>   if you could find some that didn't say that you could use it.
>
>   But the Redline is NOT that expensive, guys, and for most owners there
>   is no reason to change it every year
>
>   Here's Leslie's email from a while ago:
>
>
>
>   The Red Line oil NS designation means that in this particular oil there
>   is NO
>   additive added to reduce the clutch chatter in most limited slip
>   differentials.
>   Normally this additive is a good thing and almost mandatory in cars
>   like the
>   Corvette which has a fairly high degree of limited slip lock up.
>        Our cars have a two issues with these extra slippery additives.
>   Number
>   one is our diff uses a rather low limited slip lock up so this extra
>   slip
>   actually decreases what little lock up we have. Number two is this
>   additive will
>   inhibit our synchro rings ability to do its job and in extreme cases
>   will burn
>   up the synchro rings and the towers on the gears costing big bucks.
>       I've rebuilt ZF's since the late 1970's and have replaced dozens of
>   synchro
>   rings & gear sets due to the use of these additives.
>     As Jack DeRyke says "your mileage may vary" !!!!
>
>   Leslie A. Gray
>
>
>
>
>
>   -----Original Message-----
>   From: Bill Moore <bill at incendium.com>
>   To: Robert W. Garven Jr. <robertgarven at earthlink.net>; DeTomaso List
>   <detomaso at poca.com>
>   Sent: Mon, Feb 9, 2015 8:08 pm
>   Subject: Re: [DeTomaso] ommission - ZF gear oil weight
>   Dennis Qellla,  PPC, uses Pennzoil 80W-90 GL-5
>
>   Cheers,
>
>   Bill Moore
>
>   Incendium Supply
>
>   Calgary
>
>   -------- Original message --------
>
>   From: "Robert W. Garven Jr."
>
>   Date:2015-02-09 8:08 PM (GMT-07:00)
>
>   To: DeTomaso List
>
>   Subject: Re: [DeTomaso] ommission - ZF gear oil weight
>
>   Friends,
>   Is there a consensus on what brand type gear oil for the ZF. Im using
>   redline in my F car and it is very nice.
>   I assume the diff is in the box also and share lubrication, the Ferrari
>   does not need a friction modifier as the
>   diferential is similar to a Porsche design and the clutches work wel
>   without it.  I use Redline 75/90 NS.
>   Just curious what all you guys are using in your ZF's!
>   Rob
>   On Feb 9, 2015, at 5:04 PM, Larry Finch via DeTomaso
>   <[1]detomaso at poca.com> wrote:
>     All,
>     I just noticed I omitted a rather necessary bit of information.
>     Gear oil weight should be 80W90.
>     Larry
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>      Friends,
>      Is there a consensus on what brand type gear oil for the ZF. Im
>   using
>      redline in my F car and it is very nice.
>      I assume the diff is in the box also and share lubrication, the
>   Ferrari
>      does not need a friction modifier as the
>      diferential is similar to a Porsche design and the clutches work wel
>      without it.  I use Redline 75/90 NS.
>      Just curious what all you guys are using in your ZF's!
>      Rob
>      On Feb 9, 2015, at 5:04 PM, Larry Finch via DeTomaso
>      <[1][4]detomaso at poca.com> wrote:
>        All,
>        I just noticed I omitted a rather necessary bit of information.
>        Gear oil weight should be 80W90.
>        Larry
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